src/Spacing.C

   1 /**
   2  * \file Spacing.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Lars Gullik Bjønnes
   7  * \author Jean-Marc Lasgouttes
   8  *
   9  * Full author contact details are available in file CREDITS.
  10  */
  11
  12 #include <config.h>
  13
  14 #include "Spacing.h"
  15 #include "support/lstrings.h"
  16 #include "support/convert.h"
  17
  18 #include <sstream>
  19 #include <string>
  20
  21 using lyx::support::strToDbl;
  22
  23 //using std::ios;
  24 using std::ostream;
  25 using std::ostringstream;
  26 using std::string;
  27
  28
  29 string const Spacing::spacing_string[]
  30         = {"single", "onehalf", "double", "other"};
  31
  32
  33 string const Spacing::getValueAsString() const
  34 {
  35         switch (space) {
  36         case Default: // nothing special should happen with this...
  37         case Single: return "1.0";
  38         case Onehalf: return "1.25";
  39         case Double: return "1.667";
  40         case Other: return value;
  41         }
  42         return "1.0";
  43 }
  44
  45
  46 double Spacing::getValue() const
  47 {
  48         return strToDbl(getValueAsString());
  49 }
  50
  51
  52 void Spacing::set(Spacing::Space sp, float val)
  53 {
  54         set(sp, convert<string>(val));
  55 }
  56
  57
  58 void Spacing::set(Spacing::Space sp, string const & val)
  59 {
  60         space = sp;
  61         if (sp == Other) {
  62                 switch (int(strToDbl(val) * 1000 + 0.5)) {
  63                 case 1000:
  64                         space = Single;
  65                         break;
  66                 case 1250:
  67                         space = Onehalf;
  68                         break;
  69                 case 1667:
  70                         space = Double;
  71                         break;
  72                 default:
  73                         value = val;
  74                         break;
  75                 }
  76         }
  77 }
  78
  79
  80 void Spacing::writeFile(ostream & os, bool para) const
  81 {
  82         if (space == Default) return;
  83
  84         string cmd = para ? "\\paragraph_spacing " : "\\spacing ";
  85
  86         if (getSpace() == Spacing::Other) {
  87                 os << cmd << spacing_string[getSpace()]
  88                    << ' ' << getValueAsString() << "\n";
  89         } else {
  90                 os << cmd << spacing_string[getSpace()] << "\n";
  91         }
  92 }
  93
  94
  95 string const Spacing::writeEnvirBegin() const
  96 {
  97         switch (space) {
  98         case Default: break; // do nothing
  99         case Single:
 100                 return "\\begin{singlespace}";
 101         case Onehalf:
 102                 return "\\begin{onehalfspace}";
 103         case Double:
 104                 return "\\begin{doublespace}";
 105         case Other:
 106         {
 107                 ostringstream ost;
 108                 ost << "\\begin{spacing}{"
 109                     << getValueAsString() << '}';
 110                 return ost.str();
 111         }
 112         }
 113         return string();
 114 }
 115
 116
 117 string const Spacing::writeEnvirEnd() const
 118 {
 119         switch (space) {
 120         case Default: break; // do nothing
 121         case Single:
 122                 return "\\end{singlespace}";
 123         case Onehalf:
 124                 return "\\end{onehalfspace}";
 125         case Double:
 126                 return "\\end{doublespace}";
 127         case Other:
 128                 return "\\end{spacing}";
 129         }
 130         return string();
 131 }